Regional Price Parities: All Items: Metropolitan Portion for Washington was 110.66600 Index in January of 2022, according to the United States Federal Reserve. Historically, Regional Price Parities: All Items: Metropolitan Portion for Washington reached a record high of 110.66600 in January of 2022 and a record low of 103.13500 in January of 2013. Trading Economics provides the current actual value, an historical data chart and related indicators for Regional Price Parities: All Items: Metropolitan Portion for Washington - last updated from the United States Federal Reserve on May of 2024.